Patents by Inventor Antonin Petrzelka

Antonin Petrzelka has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Device for controlling the position of a semi-product of a treated shoe
    Patent number: 4724562
    Abstract: A device for controlling the position of a semi-product of treated shoes comprises a holder, which is provided with a heel support and a toe cap support, the mutual distance of which is adjustable by means of a displacement chain according to the size of the treated shoe. The holder is arranged in side pieces which are fixed to flanges of a hollow shaft seated in a fork extension piece of a vertical spindle seated on a pin shaft fixed in a supporting platform. A piston rod of a main pressure cylinder is connected to one of the side pieces.
    Type: Grant
    Filed: April 9, 1986
    Date of Patent: February 16, 1988
    Assignee: Tovarny Stojirenske Techniky Koncern
    Inventors: Antonin Petrzelka, Rudolf Pseja
  • Device for controlling movement of a copying roller
    Patent number: 4709434
    Abstract: A device for improving the control of the correction movement of the copying roller of a machine for roughening a margin of a tightened shoe upper comprises a holder of the copying roller which is slidably seated in the basic body of a treating head and connected to a motion gear controlled by means of electric circuits according to a selected program. The correction movement of the holder with the copying roller is controlled by electric circuits, which switches, according to the preselection of code switches, the selected combination of electromagnetic valves of distributors of respective pressure cylinders. The sequence of switching of selected combinations of the electromagnetic valves is determined by switching one of two selecting switches, which control the working cycle of the roughening of the lasting margin of the left shoe or the right one. The whole value of the correction movement of the holder results from the sum of movements of pistons of pressure cylinders.
    Type: Grant
    Filed: June 13, 1986
    Date of Patent: December 1, 1987
    Assignee: Tovarny Strojirenske Techniky Koncern
    Inventors: Josef Bis, Antonin Petrzelka
  • Apparatus for roughening the margin of lasted footwear
    Patent number: 4649585
    Abstract: An apparatus for roughening the margin of lasted footwear uppers, comprising a body of a roughening head which is adapted for moving toward an article of semi-finished footwear, the holder of which article is supported by a table board rotatable about a vertical axis. The body of the roughening head is mounted in a carrier fork which is mounted in the machine frame and the table board of the holder is provided on a tiltable support platform which is journalled in a bracket of the machine frame.
    Type: Grant
    Filed: March 25, 1986
    Date of Patent: March 17, 1987
    Assignee: Tovarny strojirenske techniky, koncern
    Inventors: Antonin Petrzelka, Rudolf Pseja